21947109

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{4639}}^1$

素因数の和:4744

約数の個数: 16

約数和(自身を含む): 31180800

約数和(自身を除く): 9233691

約数列:

[1, 3, 19, 57, 83, 249, 1577, 4639, 4731, 13917, 88141, 264423, 385037, 1155111, 7315703, 21947109]

約数ペア:

[(1, 21947109), (3, 7315703), (19, 1155111), (57, 385037), (83, 264423), (249, 88141), (1577, 13917), (4639, 4731)]